Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Velocity-dependent improvements in single-dot direction discrimination

N Matthews1, L Welch

  • 1Department of Psychology, Brown University, Providence, RI 02912, USA. nestor_matthews@brown.edu

Perception & Psychophysics
|January 1, 1997
PubMed
Summary

Perceptual learning in visual discrimination tasks is specific to stimulus features like direction and orientation. Practice effects depend on factors such as stimulus velocity and line length, influencing how we learn to perceive visual information.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Feedlot operators' and cow-calf producers' perspectives on the economic value of health-preconditioned weaner calves in South Africa.

Preventive veterinary medicine·2023
Same author

Characterizing oil and gas wells with fugitive gas migration through Bayesian multilevel logistic regression.

The Science of the total environment·2021
Same author

Levels of resilience, anxiety and depression in nurses working in respiratory clinical areas during the COVID pandemic.

Respiratory medicine·2020
Same author

Body mass index (BMI), postoperative appearance satisfaction, and sexual function in breast cancer survivorship.

Journal of cancer survivorship : research and practice·2017
Same author

Auditory prediction errors as individual biomarkers of schizophrenia.

NeuroImage. Clinical·2017
Same author

Effects of chronic prenatal MK-801 treatment on object recognition, cognitive flexibility, and drug-induced locomotor activity in juvenile and adult rat offspring.

Behavioural brain research·2017

Area of Science:

  • Cognitive Psychology
  • Neuroscience
  • Visual Perception

Background:

  • Perceptual learning enhances visual discrimination abilities through practice.
  • Previous studies suggested specificity in perceptual learning for orientation discrimination.

Purpose of the Study:

  • To investigate the specificity of perceptual learning in visual discrimination tasks.
  • To examine the role of stimulus features like direction, orientation, velocity, and line length in perceptual learning.
  • To explore the underlying mechanisms of direction and orientation discrimination.

Main Methods:

  • Three experiments involving 36 university students.
  • Tracking visual discrimination thresholds over 4,200 trials per experiment.
  • Utilizing single-dot motion-direction and line-orientation discrimination tasks.

Related Experiment Videos

Main Results:

  • Motion-direction discrimination learning was stimulus direction specific and velocity-dependent.
  • Orientation-specific practice effects were replicated but contingent on line length.
  • Practice effects were replicated but contingent on stimulus velocity.

Conclusions:

  • Perceptual learning exhibits specificity related to stimulus direction and orientation.
  • Factors like line length and stimulus velocity critically influence practice effects in visual discrimination.
  • Findings offer insights into the mechanisms governing direction and orientation discrimination.